@import "compass/css3";
 
.box-sizing-example {
  background: red;
  padding: 20px;
  border: 10px solid green;
  margin: 20px;
  width: 200px;
}
 
#content-box {
  @include box-sizing(content-box);
}
 
#border-box {
  @include box-sizing(border-box);
}
.test{
    
    background:red;
    padding:5px;
    
}
